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聚焦系统发育基因组学、功能特性以及抗菌和毒力基因流行情况的比较基因组分析

Comparative Genome Analysis of Focusing on Phylogenomics, Functional Traits, and Prevalence of Antimicrobial and Virulence Genes.

作者信息

Liu Hualin, Prajapati Vimalkumar, Prajapati Shobha, Bais Harsh, Lu Jianguo

机构信息

School of Marine Sciences, Sun Yat-sen University, Zhuhai, China.

Division of Microbiology and Environmental, Biotechnology, Aspee Shakilam Biotechnology Institute, Navsari Agricultural University, Surat, India.

出版信息

Front Genet. 2021 Sep 30;12:724217. doi: 10.3389/fgene.2021.724217. eCollection 2021.

Abstract

is a gram-positive, nonpathogenic, endospore-forming, member of a group of free-living soil bacteria with a variety of traits including plant growth promotion, production of antifungal and antibacterial metabolites, and production of industrially important enzymes. We have attempted to reconstruct the biogeographical structure according to functional traits and the evolutionary lineage of using comparative genomics analysis. All the available 96 genomes of strains were curated from the NCBI genome database, having a variety of important functionalities in all sectors keeping a high focus on agricultural aspects. In-depth analysis was carried out to deduce the orthologous gene groups and whole-genome similarity. Pan genome analysis revealed that shell genes, soft core genes, core genes, and cloud genes comprise 17.09, 5.48, 8.96, and 68.47%, respectively, which demonstrates that genomes are very different in the gene content. It also indicates that the strains may have flexible environmental adaptability or versatile functions. Phylogenetic analysis showed that is divided into two clades, and clade 2 is further dived into two different clusters. This reflects the difference in the sequence similarity and diversification that happened in the genome. The majority of plant-associated strains of were grouped in clade 2 (73 strains), while food-associated strains were in clade 1 (23 strains). Genome mining has been adopted to deduce antimicrobial resistance and virulence genes and their prevalence among all strains. The genes and codes for tunicamycin resistance protein and hydrophobic coat forming protein only exist in clade 2, while , which codes for serine proteases, is only in clade 1. Genome plasticity of all strains of reflects their adaption to different niches.

摘要

是一种革兰氏阳性、非致病性、形成芽孢的自由生活土壤细菌群体成员,具有多种特性,包括促进植物生长、产生抗真菌和抗菌代谢产物以及产生具有工业重要性的酶。我们试图根据功能特性和[具体物种名称未给出]的进化谱系,利用比较基因组学分析重建生物地理结构。从NCBI基因组数据库中挑选了所有可用的96个[具体物种名称未给出]菌株基因组,这些基因组在各个领域都具有多种重要功能,尤其高度关注农业方面。进行了深入分析以推断直系同源基因组和全基因组相似性。泛基因组分析表明,外壳基因、软核心基因、核心基因和云基因分别占17.09%、5.48%、8.96%和68.47%,这表明基因组在基因含量上差异很大。这也表明这些菌株可能具有灵活的环境适应性或多功能性。系统发育分析表明,[具体物种名称未给出]分为两个进化枝,进化枝2进一步分为两个不同的簇。这反映了[具体物种名称未给出]基因组中发生的序列相似性和多样性差异。大多数与植物相关的[具体物种名称未给出]菌株聚集在进化枝2(73株)中,而与食物相关的菌株在进化枝1(23株)中。已采用基因组挖掘来推断所有菌株中的抗微生物抗性和毒力基因及其流行情况。编码衣霉素抗性蛋白和疏水包膜形成蛋白的基因[具体基因名称未给出]仅存在于进化枝2中,而编码丝氨酸蛋白酶的基因[具体基因名称未给出]仅存在于进化枝1中。[具体物种名称未给出]所有菌株的基因组可塑性反映了它们对不同生态位的适应性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/46d5/8514880/fd00d9e11214/fgene-12-724217-g001.jpg

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